diff --git a/packages/modules/electricity_tariffs/energycharts/tariff.py b/packages/modules/electricity_tariffs/energycharts/tariff.py
index 3104efc25b..f164d3016c 100644
--- a/packages/modules/electricity_tariffs/energycharts/tariff.py
+++ b/packages/modules/electricity_tariffs/energycharts/tariff.py
@@ -1,9 +1,7 @@
 from typing import Dict
 from datetime import datetime, timedelta
 
-from helpermodules.utils.error_handling import ImportErrorContext
-with ImportErrorContext():
-    import pytz
+from helpermodules import timecheck
 
 from modules.common import req
 from modules.common.abstract_device import DeviceDescriptor
@@ -13,17 +11,9 @@
 
 
 def fetch_prices(config: EnergyChartsTariffConfiguration) -> Dict[int, float]:
-    current_dateTime = datetime.now()
     tomorrow = datetime.now() + timedelta(1)
-    if datetime.today().astimezone(pytz.timezone("Europe/Berlin")).dst().total_seconds()/3600:
-        # UTC Zeit +02:00 = '%2B02%3A00'
-        start_time = current_dateTime.strftime("%Y-%m-%d") + 'T' + current_dateTime.strftime("%H") + \
-            '%3A00' + '%2B02%3A00'
-    else:
-        # UTC Zeit +01:00 = '%2B01%3A00'
-        start_time = current_dateTime.strftime("%Y-%m-%d") + 'T' + current_dateTime.strftime("%H") + \
-            '%3A00' + '%2B01%3A00'
-    end_time = tomorrow.strftime("%Y-%m-%d") + 'T23%3A59%2B01%3A00'
+    start_time = timecheck.create_unix_timestamp_current_full_hour()
+    end_time = int(tomorrow.timestamp())
     url = f'https://api.energy-charts.info/price?bzn={config.country}&start={start_time}&end={end_time}'
     raw_prices = req.get_http_session().get(url).json()
     price_arr = []
diff --git a/packages/modules/electricity_tariffs/rabot/tariff.py b/packages/modules/electricity_tariffs/rabot/tariff.py
index 7af448ffff..f5f816f4bd 100644
--- a/packages/modules/electricity_tariffs/rabot/tariff.py
+++ b/packages/modules/electricity_tariffs/rabot/tariff.py
@@ -56,6 +56,7 @@ def get_raw_prices():
         ).json()["records"]
 
     validate_token(config)
+    # ToDo: get rid of hard coded timezone!
     # start_date von voller Stunde sonst liefert die API die nächste Stunde
     start_date = datetime.datetime.fromtimestamp(
         timecheck.create_unix_timestamp_current_full_hour()).astimezone(
diff --git a/packages/modules/electricity_tariffs/tibber/tariff.py b/packages/modules/electricity_tariffs/tibber/tariff.py
index 67513e6af7..ff34cecff1 100644
--- a/packages/modules/electricity_tariffs/tibber/tariff.py
+++ b/packages/modules/electricity_tariffs/tibber/tariff.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-from datetime import datetime, timezone
+from datetime import datetime
 from typing import Dict
 from helpermodules import timecheck
 
@@ -30,13 +30,11 @@ def fetch_prices(config: TibberTariffConfiguration) -> Dict[int, float]:
         tomorrow_prices = _get_sorted_price_data(response_json, 'tomorrow')
         sorted_market_prices = today_prices + tomorrow_prices
         prices: Dict[int, float] = {}
+        current_hour = timecheck.create_unix_timestamp_current_full_hour()
         for price_data in sorted_market_prices:
-            # konvertiere Time-String (Format 2021-02-06T00:00:00+01:00) ()':' nicht von strptime unterstützt)
-            time_str = ''.join(price_data['startsAt'].rsplit(':', 1))
-            start_time_localized = datetime.strptime(time_str, '%Y-%m-%dT%H:%M:%S.%f%z')
-            start_time_utc = int(start_time_localized.astimezone(timezone.utc).timestamp())
-            if timecheck.create_unix_timestamp_current_full_hour() <= start_time_utc:
-                prices.update({start_time_utc: price_data['total'] / 1000})
+            start_time_epoch = datetime.fromisoformat(price_data['startsAt']).timestamp()
+            if current_hour <= start_time_epoch:
+                prices.update({start_time_epoch: price_data['total'] / 1000})
     else:
         error = response_json['errors'][0]['message']
         raise Exception(error)
diff --git a/packages/modules/electricity_tariffs/voltego/tariff.py b/packages/modules/electricity_tariffs/voltego/tariff.py
index 2171e90111..20ec05f1b0 100644
--- a/packages/modules/electricity_tariffs/voltego/tariff.py
+++ b/packages/modules/electricity_tariffs/voltego/tariff.py
@@ -52,6 +52,7 @@ def get_raw_prices():
         ).json()["elements"]
 
     validate_token(config)
+    # ToDo: get rid of hard coded timezone! Check supported time formats by Voltego API
     # start_date von voller Stunde sonst liefert die API die nächste Stunde
     start_date = datetime.datetime.fromtimestamp(
         timecheck.create_unix_timestamp_current_full_hour()).astimezone(
@@ -73,6 +74,7 @@ def get_raw_prices():
     prices: Dict[int, float] = {}
     for data in raw_prices:
         formatted_price = data["price"]/1000000  # €/MWh -> €/Wh
+        # timezone of the result should already be UTC as epoch does not support timezones
         timestamp = datetime.datetime.fromisoformat(data["begin"]).astimezone(
             pytz.timezone("Europe/Berlin")).timestamp()
         prices.update({int(timestamp): formatted_price})